<template>
  <div>
    <table
      border="1"
      width="700"
      style="border-collapse: collapse; text-align: center"
    >
      <caption>
        购物车
      </caption>
      <thead>
        <tr>
          <th>
            <input
              type="checkbox"
              :checked="isAll"
              @change="changeAll(!isAll)"
            />
            <span>全选</span>
          </th>
          <th>名称</th>
          <th>价格</th>
          <th>数量</th>
          <th>总价</th>
          <th>操作</th>
        </tr>
      </thead>
      <tbody>
        <tr v-for="(item, index) in goodList" :key="index">
          <td>
            <input
              type="checkbox"
              :checked="item.checked"
              @change="changeChecked(item.name)"
            />
          </td>
          <td>{{ item.name }}</td>
          <td>{{ item.price }}</td>
          <td>
            <button @click="changeNum({ name: item.name, num: -1 })">-</button>
            {{ item.num }}
            <button @click="changeNum({ name: item.name, num: 1 })">+</button>
          </td>
          <td>{{ item.num * item.price }}</td>
          <td><button @click="delGood(item.name)">删除</button></td>
        </tr>
      </tbody>
      <tfoot>
        <tr>
          <td>合计:</td>
          <td colspan="5">{{total}}</td>
        </tr>
      </tfoot>
    </table>
  </div>
</template>

<script>
import { mapState, mapGetters, mapMutations } from 'vuex'
export default {
  computed: {
    ...mapState(['goodList']),
    ...mapGetters(['isAll','total']),
  },
  methods: {
    ...mapMutations(['changeAll', 'changeChecked', 'changeNum', 'delGood']),
  },
}
</script>

<style></style>
